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प्रश्न
How many eggs are released by a human ovary in a month? How many eggs do you think would have been released if the mother gave birth to identical twins? Would your answer change if the twins born were fraternal?
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उत्तर
Each ovary produces several immature eggs, which are connected with groups of other cells known as follicles. In humans, only one egg is usually removed at a time; however, two or more may emerge during the menstrual cycle. The egg emerges from the ovary between the 14th and 16th days of the typically 28-day menstrual cycle. Fertilisation of a single egg results in one zygote (monozygotic) that divides into two embryos, forming identical twins. If the twins were born fraternal, two eggs would be released. Fraternal twins (also known as non-identical twins) are typically formed when two fertilised eggs are implanted in the uterine wall at the same time. The two eggs produce two zygotes; hence, these twins are also known as dizygotic or binovular twins.
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संबंधित प्रश्न
Name the function of the following:
Endometrium
Name the function of the following:
Fimbriae
Given here is a section of the female reproductive system of human beings.
Name the parts labelled 1 to 4
Choose the odd one in each of the following:
Ovary; fallopian tube; ureter; uterus
Rewrite the terms in the correct order so as to be in a logical sequence.
Graafian follicle, ostium, uterus, fallopian tube.
Give appropriate term of the following:
The monthly discharge of blood and disintegrated uterine tissues in human female.
Given below is a diagram of the female reproductive system of a human being
(i) Name the parts numbered 1 to 6.
(ii) Normally after how many days does an ovary release an egg?
(iii) Where are the sperms released during coitus?
(iv) What do the sperms do after being released?
(v) What is the function of the organ numbered 5?
(vi) How many days does it normally take from the fertilization of the egg up to the birth of the baby?
Explain the term Tubectomy.
State the Location:
Ovary
Which of the following is not a part of female reproductive system?
Match the parts of the given figure with the correct option.
| 1 | 2 | 3 | 4 | 5 | |
| a. | Fallopian tube | Oviduct | Uterus | Cervix | Vagina |
| b. | Oviduct | Cervix | Vagina | Ovary | Vas deferens |
| c. | Ovary | Oviduct | Uterus | Vagina | Cervix |
| d. | Fallopian tube | Ovary | Cervix | Uterus | Vagina |
Mark the CORRECT sequence of structures in the breast from the inner to the outer side.
The part of fallopian tube closest to the ovary is ______.
Which one the following is a part of external genitalia of a female human being?
Lower narrow end of uterus is called ______.
Read the following and answer from given below:
Oogenesis is the process of the formation of an ovum in the ovaries. It consists of three phases: multiplication, growth, and maturation. Oogenesis is controlled by hormones GnRH, LH, FSH. GnRH secreted by the hypothalamus stimulates the anterior lobe of the pituitary gland to secrete LH and FSH.
what is the function of hormones FSH?
In human beings, the correct sequence of events during reproduction is
Progesterone is secreted by ______.
The oviducts are also known as ______.
Match the following:
| Ovaries | Bean shape |
| Fallopian tubes | Almond shape |
| Uterus | Funnel – shape |
| Kidney | pear-shaped |
What is parturition?
Female reproductive organs and associated functions are given below in column A and B. Fill the blank boxes.
| Column A | Column B |
| Ovaries | Ovulation |
| Oviduct | a |
| b | Pregnancy |
| Vagina | Birth |
Explain how the uterus and placenta provide necessary conditions for proper growth and development of the embryo after implantation?
Given below is a certain situation. Analyze and describe its possible impact on a person:
Placenta does not attach to the uterus optimally.
The ______ is also called the womb.
The ______ is also called the womb.
In absence of fertilization, corpus luteum degenerates into ______.
Clitoris is equivalent to the male penis.
